81554380

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{140611}}^1$

素因数の和:140649

約数の個数: 24

約数和(自身を含む): 177171120

約数和(自身を除く): 95616740

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 290, 580, 140611, 281222, 562444, 703055, 1406110, 2812220, 4077719, 8155438, 16310876, 20388595, 40777190, 81554380]

約数ペア:

[(1, 81554380), (2, 40777190), (4, 20388595), (5, 16310876), (10, 8155438), (20, 4077719), (29, 2812220), (58, 1406110), (116, 703055), (145, 562444), (290, 281222), (580, 140611)]